From: Yaron Minsky <yminsky@janestreet.com>
To: "caml-list@inria.fr" <caml-list@inria.fr>
Subject: [Caml-list] Turning floating point errors into exceptions
Date: Sat, 3 Aug 2013 20:49:46 -0400 [thread overview]
Message-ID: <CACLX4jTdwP-O81J4BB6p1QJ2SCGSh+7Jw25Wum0WH6ET-D+WrQ@mail.gmail.com> (raw)
This is really bringing up a rather old question to see whether the
state of the world has changed when it comes to handling floating
point exceptions. Here's the thread on this topic from 2003.
http://caml.inria.fr/pub/ml-archives/caml-list/2003/10/686468535e6100213e2e85bca8be51f1.en.html
The key question is: is it possible to cause floating point operations
that generate values like NaN and inf to instead generate exceptions.
The answer from Xavier as of 2003 is: no, there's no good way of
portably catching a synchronous error like SIGFPE. Apparently this is
in part due to the state of the C standards of the time.
So, I'm curious whether things have changed enough such that this
would now be easier. The issue came up again because I've been
showing OCaml to a physicist friend who asked how to turn on this
behavior in OCaml, a thing he's used to from Fortran and considers
essential for debugging.
y
next reply other threads:[~2013-08-04 0:49 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-04 0:49 Yaron Minsky [this message]
2013-08-14 16:19 ` Xavier Leroy
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